package com.uum.aop.aspect;


import cn.hutool.core.util.StrUtil;
import cn.hutool.extra.servlet.ServletUtil;
import com.alibaba.fastjson.JSON;
import com.uum.admin.api.OperationLogFeignClient;
import com.uum.common.core.annotation.Operation;
import com.uum.common.core.constant.MicroServiceNameConstants;
import com.uum.common.core.entity.SysOperationLog;
import com.uum.common.core.enums.BusinessStatus;
import com.uum.web.exception.BizException;
import com.uum.web.util.IpUtils;
import com.uum.web.util.JwtUtils;
import lombok.extern.log4j.Log4j2;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.HandlerMapping;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Map;

@Aspect
@Component
@Log4j2
public class OperationLogAspect {

    @Resource
    private OperationLogFeignClient operationLogFeignClient;

    // 配置织入点
    @Pointcut("@annotation(com.uum.common.core.annotation.Operation)")
    public void logPointCut() {

    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Object jsonResult)
    {
        handleLog(joinPoint, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e)
    {
        handleLog(joinPoint, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, final Exception e, Object jsonResult) {
        try {
            // 获得注解
            Operation controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null) {
                return;
            }

            // *========数据库日志=========*//
            SysOperationLog operation = new SysOperationLog();
            //获取当前的用户ID
            operation.setUserId(JwtUtils.getUserId());
            //成功状态
            operation.setStatus(String.valueOf(BusinessStatus.SUCCESS.ordinal()));
            //ip地址
            ServletRequestAttributes servletRequestAttributes = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());
            HttpServletRequest request = servletRequestAttributes.getRequest();
            String ip = ServletUtil.getClientIP(request);
            operation.setOperatorIp(ip);
            //操作地址
            String address = IpUtils.getCityInfo(ip);
            operation.setOperatorLocation(address);
            //请求路径
            String requestURI = request.getRequestURI();
            operation.setRequestUrl(requestURI);
            //微服务名称
            String header = request.getHeader(MicroServiceNameConstants.SERVICE_HEADER);
            operation.setMicroService(header);
            if (e != null) {
                //失败状态
                operation.setStatus(String.valueOf(BusinessStatus.FAIL.ordinal()));
                String msg = null;
                if (e instanceof BizException) {
                    msg =  e.getMessage();
                } else {
                    msg = e.getMessage();
                }
                operation.setErrorMsg(StrUtil.sub(msg, 0, 2000));
            }
            //接口类路径
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operation.setMethodClass(className + "." + methodName + "()");
            //设置请求方式
            operation.setRequestMethod(request.getMethod());
            //处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, operation,jsonResult);
            //保存数据库
            operationLogFeignClient.addOperationLog(operation);
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log 日志
     * @param operLog 操作日志
     * @param jsonResult
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, Operation log, SysOperationLog operLog, Object jsonResult) {
        //业务类型
        operLog.setBusinessType(log.businessType().ordinal());
        //接口描述
        operLog.setInterfaceDepict(log.description());
        //是否需要保存request，参数和值
        if (log.isSaveRequestData()) {
            //获取参数的信息
            setRequestValue(joinPoint, operLog);
        }
        //是否需要保存返回的结果参数
        if (log.isSaveResponseData()) {
            //返回参数
            operLog.setJsonResult(StrUtil.sub(JSON.toJSONString(jsonResult),0,2000));
        }
    }


    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, SysOperationLog operLog) {
        ServletRequestAttributes servletRequestAttributes = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());
        HttpServletRequest request = servletRequestAttributes.getRequest();
        String requestMethod = operLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
//            decideAddOrUpdate(request.getQueryString(),operLog);
            String params = argsArrayToString(joinPoint.getArgs());
            operLog.setOperationParam(StrUtil.sub(params, 0, 2000));
        } else if (HttpMethod.GET.name().equals(requestMethod)) {
            operLog.setOperationParam(StrUtil.sub(request.getQueryString(), 0, 2000));
        } else {
            Map<?, ?> paramsMap = (Map<?, ?>) request.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            operLog.setOperationParam(StrUtil.sub(paramsMap.toString(), 0, 2000));
        }
    }




    /**
     * 是否存在注解，如果存在就获取
     */
    private Operation getAnnotationLog(JoinPoint joinPoint) throws Exception {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null)
        {
            return method.getAnnotation(Operation.class);
        }
        return null;
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (int i = 0; i < paramsArray.length; i++) {
                if (!isFilterObject(paramsArray[i]) && paramsArray[i] != null) {
                    Object jsonObj = JSON.toJSON(paramsArray[i]);
                    params += jsonObj.toString() + " ";
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    public boolean isFilterObject(final Object o) {
        return o instanceof MultipartFile || o instanceof HttpServletRequest
                || o instanceof HttpServletResponse;
    }
}

